Android开发之使用Notification.Builder
通知的主要功能是提示功能。例如:短信、推送信息等等。
大体使用步骤:
1.获取状态通知栏管理
NotificationManager 是一个系统Service,所以必须通过 getSystemService(NOTIFICATION_SERVICE)方法来获取。
notificationManager = (NotificationManager) this .getSystemService(NOTIFICATION_SERVICE);
2.实例化通知栏构造器NotificationCompat.Builder
3.设置NotificationCompat.Builder
4.设置PendingIntent
5.显示
方法或参数介绍:
1.PendingIntent
PendingIntent.getBroadcast(context, requestCode, intent, flags)
PendingIntent.getActivities(context, requestCode, intents, flags)
PendingIntent.getService(context, requestCode, intent, flags)
中的flags属性参数:
FLAG_ONE_SHOT 表示返回的PendingIntent仅能执行一次,执行完后自动取消
FLAG_NO_CREATE 表示如果描述的PendingIntent不存在,并不创建相应的PendingIntent,而是返回NULL
FLAG_CANCEL_CURRENT 表示相应的PendingIntent已经存在,则取消前者,然后创建新的PendingIntent
FLAG_UPDATE_CURRENT 表示更新的PendingIntent
2.notification.flags参数介绍
Notification.FLAG_SHOW_LIGHTS //三色灯提醒,在使用三色灯提醒时候必须加该标志符
Notification.FLAG_ONGOING_EVENT //发起正在运行事件(活动中)
Notification.FLAG_INSISTENT //让声音、振动无限循环,直到用户响应 (取消或者打开)
Notification.FLAG_ONLY_ALERT_ONCE //发起Notification后,铃声和震动均只执行一次
Notification.FLAG_AUTO_CANCEL //用户单击通知后自动消失
Notification.FLAG_NO_CLEAR //只有全部清除时,Notification才会清除 ,不清楚该通知(QQ的通知无法清除,就是用的这个)
Notification.FLAG_FOREGROUND_SERVICE //表示正在运行的服务
使用方法:
在设置完属性后,设置
Notification notification =builder.build(); notification.flags =Notification.FLAG_ONLY_ALERT_ONCE;
3.setVibrate(long[] pattern)
设置震动,需要权限.
<uses-permission android:name="android.permission.VIBRATE"/>
4.builder.setOngoing( )
设置为ture,表示它为一个正在进行的通知。简单的说,当为ture时,不可以被侧滑消失。
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使用自定义Notification,就要使用RemoteViews。
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使用实例:
图片:
实现代码:
MainActivity.java
public class MainActivity extends Activity { Button button, button2; NotificationManager notificationManager; public final static String NEWS_LISTEN = "broadcast"; // 用于自定义Notification,点击事件的验证 String remoteViewsText = "未点击"; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); notificationManager = (NotificationManager) this .getSystemService(NOTIFICATION_SERVICE); IntentFilter filter = new IntentFilter(); filter.addAction(NEWS_LISTEN); this.registerReceiver(broadcastReceiver, filter); } public void click(View v) { switch (v.getId()) { case R.id.but:// 使用普通的Notification Notification.Builder builder = new Notification.Builder( MainActivity.this); Intent intent = new Intent(MainActivity.this, SecondActivity.class); PendingIntent pendingIntent = PendingIntent.getActivity( MainActivity.this, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT); builder.setContentIntent(pendingIntent); builder.setSmallIcon(R.drawable.close);// 设置图标 builder.setWhen(System.currentTimeMillis());// 设置通知来到的时间 // builder.setAutoCancel(true); builder.setContentTitle("标题");// 设置通知的标题 builder.setContentText("内容");// 设置通知的内容 builder.setTicker("状态栏上显示");// 状态栏上显示 builder.setOngoing(true); /* * // 设置声音(手机中的音频文件) String path = * Environment.getExternalStorageDirectory() .getAbsolutePath() + * "/Music/a.mp3"; File file = new File(path); * builder.setSound(Uri.fromFile(file)); */ // 获取Android多媒体库内的铃声 builder.setSound(Uri.withAppendedPath( Audio.Media.INTERNAL_CONTENT_URI, "5")); // builder.setVibrate(new long[]{2000,1000,4000}); //需要真机测试 Notification notification = builder.build(); // notification.flags =Notification.FLAG_ONGOING_EVENT; notificationManager.notify(0, notification); break; case R.id.but2:// 使用自定义的Notification // 3.0之前不支持Button MyNotification(); break; case R.id.but3:// 使用下载的Notification,在4.0以后才能使用 final Notification.Builder builder3 = new Notification.Builder( MainActivity.this); builder3.setSmallIcon(R.drawable.ic_launcher) .setTicker("showProgressBar").setContentInfo("contentInfo") .setOngoing(true).setContentTitle("ContentTitle") .setContentText("ContentText"); // 模拟下载过程 new Thread(new Runnable() { @Override public void run() { int progress = 0; for (progress = 0; progress < 100; progress += 5) { // 将setProgress的第三个参数设为true即可显示为无明确进度的进度条样式 builder3.setProgress(100, progress, false); notificationManager.notify(0, builder3.build()); try { Thread.sleep(1 * 1000); } catch (InterruptedException e) { System.out.println("sleep failure"); } } builder3.setContentTitle("Download complete") .setProgress(0, 0, false).setOngoing(false); notificationManager.notify(0, builder3.build()); } }).start(); break; case R.id.but4:// 大布局通知在4.1以后才能使用,BigTextStyle Notification.BigTextStyle textStyle = new Notification.BigTextStyle(); textStyle.setBigContentTitle("大标题") // 标题 .setSummaryText("SummaryText") .bigText( "Big Text!!!!!!!!!!!!!!!!!!!!!!!!!!!!" + "!!!!!!!!!!!" + "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");// 内容 Notification.Builder builder2 = new Notification.Builder( MainActivity.this); builder2.setSmallIcon(R.drawable.icon);// 小图标 // 大图标 builder2.setLargeIcon(BitmapFactory.decodeResource( this.getResources(), R.drawable.close)); builder2.setTicker("showBigView_Text") .setContentInfo("contentInfo"); builder2.setStyle(textStyle); builder2.setAutoCancel(true); notificationManager.notify(0, builder2.build()); break; case R.id.but5://大布局通知在4.1以后才能使用,大布局图片 Notification.BigPictureStyle bigPictureStyle = new Notification.BigPictureStyle(); bigPictureStyle.bigPicture(BitmapFactory.decodeResource(getResources(), R.drawable.back)); Notification.Builder builder4 = new Notification.Builder( MainActivity.this); builder4.setSmallIcon(R.drawable.icon);// 小图标 // 大图标 builder4.setLargeIcon(BitmapFactory.decodeResource( this.getResources(), R.drawable.close)); builder4.setTicker("showBigView_Picture") .setContentInfo("contentInfo"); builder4.setStyle(bigPictureStyle); builder4.setAutoCancel(true); notificationManager.notify(0, builder4.build()); break; case R.id.but6://大布局通知在4.1以后才能使用,InboxStyle Notification.InboxStyle inboxStyle = new Notification.InboxStyle(); inboxStyle.setBigContentTitle("InboxStyle"); inboxStyle.setSummaryText("Test"); for(int i =0 ;i<5;i++){ inboxStyle.addLine("new:"+i); } Notification.Builder builder5 = new Notification.Builder( MainActivity.this); builder5.setSmallIcon(R.drawable.icon);// 小图标 // 大图标 builder5.setLargeIcon(BitmapFactory.decodeResource( this.getResources(), R.drawable.close)); builder5.setTicker("showBigView_InboxStyle") .setContentInfo("contentInfo"); builder5.setStyle(inboxStyle); builder5.setAutoCancel(true); notificationManager.notify(0, builder5.build()); break; } } @Override protected void onDestroy() { super.onDestroy(); // 取消广播接收 this.unregisterReceiver(broadcastReceiver); } /** * 自定义Notification */ public void MyNotification() { RemoteViews remoteViews = new RemoteViews(getPackageName(), R.layout.form); remoteViews.setTextViewText(R.id.tv_form, remoteViewsText); Intent intent2 = new Intent(MainActivity.NEWS_LISTEN); // 使用广播,所以INTENT必须用getBroadcast方法 PendingIntent pendingIntent2 = PendingIntent.getBroadcast( MainActivity.this, 1, intent2, PendingIntent.FLAG_UPDATE_CURRENT); // 绑定 remoteViews.setOnClickPendingIntent(R.id.but_form, pendingIntent2); Notification.Builder builderMain = new Notification.Builder( MainActivity.this); builderMain .setContent(remoteViews) .setSmallIcon(R.drawable.icon) .setLargeIcon( BitmapFactory.decodeResource(this.getResources(), R.drawable.open)).setOngoing(true) .setTicker("music is playing"); notificationManager.notify(0, builderMain.build()); } // 广播接收器(自定义Notification使用到) BroadcastReceiver broadcastReceiver = new BroadcastReceiver() { @Override public void onReceive(Context c, Intent intent) { if (intent.getAction().equals(NEWS_LISTEN)) { remoteViewsText = "已点击"; MyNotification(); } } }; }
activity_main.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" tools:context="${relativePackage}.${activityClass}" > <Button android:id="@+id/but" android:layout_width="fill_parent" android:layout_height="wrap_content" android:onClick="click" android:text="notification one" /> <Button android:id="@+id/but2" android:layout_width="fill_parent" android:layout_height="wrap_content" android:onClick="click" android:text="notification two" /> <Button android:id="@+id/but3" android:layout_width="fill_parent" android:layout_height="wrap_content" android:onClick="click" android:text="notification three" /> <Button android:id="@+id/but4" android:layout_width="fill_parent" android:layout_height="wrap_content" android:onClick="click" android:text="notification four" /> <Button android:id="@+id/but5" android:layout_width="fill_parent" android:layout_height="wrap_content" android:onClick="click" android:text="notification five" /> <Button android:id="@+id/but6" android:layout_width="fill_parent" android:layout_height="wrap_content" android:onClick="click" android:text="notification six" /> </LinearLayout>
form.xml(自定义通知的样式)
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" > <Button android:id="@+id/but_form" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="嘻嘻" /> <TextView android:id="@+id/tv_form" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="无"/> </LinearLayout>
SecondActivity.java 只是一个activity。
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